DocumentCode :
753253
Title :
Evaluation of input impedance and radar cross section of probe-fed microstrip patch elements using an accurate feed model
Author :
Aberle, J.T. ; Pozar, D.M. ; Birtcher, C.R.
Author_Institution :
Telecommun. Res. Center, Arizona State Univ., Tempe, AZ, USA
Volume :
39
Issue :
12
fYear :
1991
Firstpage :
1691
Lastpage :
1696
Abstract :
Input impedance and radar cross section results for probe-fed single rectangular and circular microstrip patch elements obtained using an accurate and efficient numerical model are presented. The model uses a full-wave Green´s function/Galerkin solution in which the connection of a vertical probe feed to the patch is rigorously included in the analysis by use of a special basis function called the attachment mode, which is derived from the corresponding cavity model solution. Comparisons with measured input impedance and monostatic radar cross section data demonstrate the efficacy of the theory. This model accurately predicts the performance of probe-fed patches printed on thick and/or high dielectric constant substrates and patch elements with more than one probe feed, cases where other less rigorous models fail.<>
Keywords :
antenna feeders; electric impedance; microstrip antennas; numerical analysis; radar cross-sections; Galerkin solution; accurate feed model; attachment mode; basis function; circular patches; full-wave Green´s function; high dielectric constant substrates; input impedance; microstrip antennas; microstrip patch elements; numerical model; probe-fed patches; radar cross section; rectangular patches; vertical probe feed; Dielectric measurements; Feeds; Green´s function methods; High-K gate dielectrics; Impedance measurement; Microstrip; Numerical models; Predictive models; Probes; Radar cross section;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/8.121589
Filename :
121589
Link To Document :
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